Belato, D.Weber, H. I.Balthazar, José Manoel [UNESP]2014-05-272014-05-272002-11-01Revista Brasileira de Ciencias Mecanicas/Journal of the Brazilian Society of Mechanical Sciences, v. 24, n. 4, p. 335-340, 2002.0100-7386http://hdl.handle.net/11449/67011In this work a particular system is investigated consisting of a pendalum whose point of support is vibrated along a horizontal guide by a two bar linkage driven from a DC motor, considered as a limited power source. This system is nonideal since the oscillatory motion of the pendulum influences the speed of the motor and vice-versa, reflecting in a more complicated dynamical process. This work comprises the investigation of the phenomena that appear when the frequency of the pendulum draws near a secondary resonance region, due to the existing nonlinear interactions in the system. Also in this domain due to the power limitation of the motor, the frequency of the pendulum can be captured at resonance modifying completely the final response of the system. This behavior is known as Sommerfield effect and it will be studied here for a nonlinear system.335-340engBifurcationEscapeNonideal systemPendulumSommerfield effectBifurcation (mathematics)DC motorsOscillationsPendulumsVibrations (mechanical)Sommerfeld effectElectromechanical devicesArtigo10.1590/S0100-73862002000400014S0100-73862002000400014Acesso aberto2-s2.0-0036881921